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Synonyms

extrusion

American  
[ik-stroo-zhuhn] / ɪkˈstru ʒən /

noun

  1. the act of extruding or the state of being extruded.

  2. something that is extruded.

extrusion British  
/ ɪkˈstruːʒən /

noun

  1. the act or process of extruding

    1. the movement of magma onto the surface of the earth through volcano craters and cracks in the earth's crust, forming igneous rock

    2. any igneous rock formed in this way

  3. a component or length of material formed by the process of extruding

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
extrusion Scientific  
/ ĭk-stro̅o̅′zhən /

  1. The emission of lava onto the surface of the Earth.

  2. ◆ Rocks that form from the cooling of lava are generally fine-grained (because they cool quickly, before large crystals can grow) and are called extrusive rocks.

  3. Compare intrusion

  4. The process of making a shaped object, such as a rod or tube, by forcing a material into a mold.

Other Word Forms

  • extrusible adjective

Etymology

Origin of extrusion

1530–40; < Medieval Latin extrūsiōn- (stem of extrūsiō ), equivalent to Latin extrūs ( us ) (past participle of extrūdere to extrude ) + -iōn- -ion

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

U.S. smelting has declined under high energy costs, and there has also been chronic underinvestment in rolling, extrusion and finishing, he added.

From The Wall Street Journal • Oct. 10, 2025

Right now, the most popular processing method is extrusion.

From Salon • Nov. 25, 2024

Dekker provided the first demonstration of this loop extrusion predicted by Mirny, collaborated on synthetic cells with Schwille, and developed new ways to use nanopores—holes or membranes of nanometer size—to sequence DNA and proteins.

From Science Magazine • Jun. 6, 2024

The extrusion rate started high and decreased exponentially to very little.

From Slate • Dec. 20, 2023

Viviparity occurs both among the limbless and the tailed Amphibia, the eggs hatching before they leave the oviduct or immediately after extrusion.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 1 "Edwardes" to "Ehrenbreitstein" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.